The gas filled the entire balloon.

A substance that exists in a state that can fill any space and is not solid or liquid.
The gas escaped from the container.
He inhaled the gas by mistake.
The gas was used to power the stove.
natural gas
gas leak
gas station
vapor
fume
air
The gas in the balloon makes it float.

A substance that is in a state of matter where it has no fixed shape and can fill any space.
The gas from the stove helps to cook the food.
He filled the tire with gas to make it work again.
The gas escaped from the container quickly.
natural gas
gas leak
gas station
vapor
fume
air
I need to fill my car with gas.

A fuel used for heating or powering vehicles.
The gas station is just down the road.
She bought a gas can for the lawnmower.
He checked the gas gauge before driving.
gas station
gas tank
gas mileage
fuel
petrol
natural gas